SER VERS SNR(该图的横坐标信噪比是每个QAM符号的信噪比而不是每bit的信噪比) BER VERS SNR(未画出理论误码率曲线) 分析结论 本仿真中应该重点关注信噪比的换算,包括Eb/N0(每bit的信噪比)到Es/N0(每QAM符号的信噪比),频域通过IFFT到时域前后计算SNR,特别是子载波个数与IFFT的点数不相同时,如何在时域加噪声,每...
Tibor BorosUSUS20040005011 * 2000年12月21日 2004年1月8日 Trott Mitchell D. Multi-bit per symbol rate quadrature amplitude encodingUS20040005011 * Dec 21, 2000 Jan 8, 2004 Trott Mitchell D. Multi-bit per symbol rate quadrature amplitude encoding...
Symbol Rate parameter sets the symbol rate for the VSA's custom IQ demodulator. Set this parameter to match the symbol rate of the system. A symbol may consist of one or more bits. For example, in a BPSK system, each symbol represents 1 bit; in a QPSK system, each symbol represents ...
Code Rate(γ, ρ)(N, K)Aggregate Information Bit Rate (Gb/s) QPSK8-QAM16-QAM 0.8 (3, 15) (8550, 6840) 160 170 180 (4, 21) (8547, 6922) 0.85 (3, 20) (16,200, 13,770) 240 255 270 (4, 27) (16,200, 13,810) a NB-LDPC-CM (BI-LDPC-CM) scheme is the first (seco...
comforting because at the rate things are going, I won’t have those for long. The clock ticked behind me, insistent and consistent. My blood pressure rose. Pen and paper, pen and paper. So many times before I’d combine those things and more would come of it. I was a ...
System and method for equalizing a high bit rate optical communication channel in a symbol spaced adaptive Multiple-In-Multiple-Out (MIMO) system, where the optical communication channel carries a signal that is sampled at a symbol rate. Accordingly, Anti Aliasing Filtering (which introduces ...
sample. Therefore, it must be in conformance with the system parameters. Changing the symbol period while keeping all other parameters of the block and model the same amounts to changing the variance of the noise added to the signal. This would thus ...
(AWGN). Detection is one of the areas in which the bit error rate (BER) performance of the OFDM system can be improved. Machine learning algorithms only depend on the training data to predict the outputs; hence, we can detect the symbol even without the use of cyclic prefix or channel ...
Performance indicators displayed are achieved data rate (UL and DL), and achieved spectral efficiency (UL and DL). The peak values are calculated as per 3GPP TR 37.910. Get displayPerformanceIndicators(metricsVisualizer); Peak UL Throughput: 14.22 Mbps. Achieved Cell UL Throughput: 5.72 Mbps ...
@ofir: Well, the slope of the symbol error rate does not change. Yes, it does get shifted in the x-axis based on the cyclic prefix and the number of subcarriers. I have discussed about a simple BPSK case athttps://dsplog.com/2008/06/10/ofdm-bpsk-bit-error/ ...